It's nowhere near on par with the Mypressi, in terms of espresso. Mypressi shot quality is far, far better.
The Presso/ROK is easy & fun to use, needs a fair bit of pre-heating. A couple of run throughs with boiling water, with a pause arms half down to hold the water in the device & portafilter, then you are good to go.
Maybe due to the lower pressure, maybe due to the crude shower screen, but you don't get decent puck integrity, the puck always seems a little loose and the top looks shot blasted. Maybe because of this you seem to get a little more solids in the cup with finer grinds, so I line the basket with an Aeropress filter paper for a cleaner cup.
There is a lot of talk about how to get a decent crema with the Presso/ROK...it can be done but is somewhat of an uphill battle & can detract from focus on the drink, which may still be pretty good in it's own right. If you forget trying to get crema/an authentic espresso type drink, grind a little coarser and head more for lungo/moka pot brew ratios, you can get great, quick, strong coffee.
There was a recent post on the UK forum stating that ROK were not using BPA free materials for the water chamber.
I have one of the older, All Clad, versions of this machine. They were blowing them out pretty cheap at someplace like Target. I think it was about $50.
If you want to amuse yourself by pulling a shot of espresso without the use of electricity, this thing will do it, but it is a whole lot of bother. You have to preheat it by running hot water through it a few times before the shot. There are air gaps in the piston which limit the pressure. I found a workaround by pumping the handles to build up the pressure. Jim Schulman came up with a good fix for this issue which involved Teflon inserts to fill the gaps. I believe this fix is on Home Barista. I was going to do Jim's fix but then started to wonder if the gaps were intentional to limit pressure and therefore force on the handles. I started to see stuff about the handles breaking causing the machine to tip and scald the user. I may do Jim's mod someday but this thing does scare me.
I would say that if the new seller of this machine has addressed the safety issue and made it so it will yield the pressure of a real espresso machine, buy it if you are willing to put up with the drill.
I think there was an incarnation of this machine before All Clad which was well thought of.
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